(ned help with is>> en os<<

Sup, cboard n****s,
anyway, i'm kinda stuck again.
Im still reading the book accelerated c++, anyway, they explained what is en os is, but when i try to use it in my code, i get the message that they are undeclared.
this is what I do:
#include <iostream>
#include <string>
int main()
{
os << 6;
is>> 8;
std::cin.get();
)
plus i dont understand how to use this, since it's not explained but only "said'' in the book:
string s (z,n).
please explain the above in a code.
Thank you.

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Quote:

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Originally Posted by Kuro Tensai

Sup, cboard n****s,
anyway, i'm kinda stuck again.
Im still reading the book accelerated c++, anyway, they explained what is en os is, but when i try to use it in my code, i get the message that they are undeclared.
this is what I do:
#include <iostream>
#include <string>
int main()
{
os << 6;
is>> 8;
std::cin.get();
)
plus i dont understand how to use this, since it's not explained but only "said'' in the book:
string s (z,n).
please explain the above in a code.
Thank you.

---

please help me, im tryin to use code tags, but it isn't working, there is somethin wrong with the forum.Can someone please answer my question?

I think the main problem is that you think os and is exist. They might, if you create them; if you don't, they won't.

You've even got the name of the "real" input stream, cin, right there in your code.

(Aside: to use code tags you start with [code] and then you paste your code and then you end with [/code] (note the way the slash goes).)

Quote:

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Originally Posted by tabstop

I think the main problem is that you think os and is exist. They might, if you create them; if you don't, they won't.

You've even got the name of the "real" input stream, cin, right there in your code.

(Aside: to use code tags you start with [code] and then you paste your code and then you end with [/code] (note the way the slash goes).)

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I need help dude, im stuck, i haven´t learned 4 a while cuz im freakin stuck, can u please be more specific?

Quote:

---

Originally Posted by Kuro Tensai

I need help dude, im stuck, i haven´t learned 4 a while cuz im freakin stuck, can u please be more specific?

---

There is no such thing as "os". I don't know how much more specific I can be.

What does your book say about "en os is"? Can you post some text, and perhaps an example, from where you're seeing this?

Also, it might be a good idea to tone down your enthusiastic salutations. A simple "Hello" would be a lot more appropriate.

Quote:

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Originally Posted by Matticus

What does your book say about "en os is"? Can you post some text, and perhaps an example, from where you're seeing this?

Also, it might be a good idea to tone down your enthusiastic salutations. A simple "Hello" would be a lot more appropriate.

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ok, i think i get it now, but i still do not understand what his means:

Code:

---

string s(z,n)

---

Quote:

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Originally Posted by Kuro Tensai

i still do not understand what his means:

Code:

---

string s(z,n)

---

---

That looks like the definition of a variable named s of type string. The z and n are arguments that are passed to the constructor. Read up more on the available constructors for std::string, e.g., at cppreference.com.